Saw many familiar faces in this class. I've taught some of them when they were in lower sec.
Covered portion of "Static Electricity" with the class. Some research assignment for the class:
1) How does the lightning rod work? (Please do not be influenced by what I've said in class, do some research... You may start with Benjamin Franklin's experiment)
I'll see Sec 3K in Physics Lab 1 on Day 3. Please be punctual and remember to bring the material for the practical session.
The slides on this topic...
Uses of Static Electricity
Tuesday, June 30, 2009
Term 3 Week 1 Lesson with Sec 3H (800h-910h)
Some ground rules were given to the pupils of Sec 3H. Remember the ruler, calculator, writing material and Physics files for the lessons. Also remember that the Practical session for Sec 3H will take place on even week, Tuesday (1425h-1535h). Please queue outside the lab 10 minutes before the start of the lesson, i.e. 1415h.
The pupils were also instructed to download the syllabus for the subject at the SEAB website located at http://seab.gov.sg/SEAB/oLevel/syllabus/school/2010_GCE_O.html
For Sec 3H pupils who are taking Science (Physics/Biology), the subject code is 5117 and the syllabus can be downloaded directly from: http://seab.gov.sg/SEAB/oLevel/syllabus/2010_GCE_O_Level_Syllabuses/5117_2010.pdf
For Sec 3I & 3K pupils who are taking Physics (with SPA), the subject code is 5058 and the syllabus can be downloaded directly at: http://seab.gov.sg/SEAB/oLevel/syllabus/2010_GCE_O_Level_Syllabuses/5058_2010.pdf
With Sec 3H today, I've shown a video clip on "Safe Use of Electricity in the Home".
We have covered so far, the calculation of Power and electrical usage in kWh. Please go through the ppt slides and get ready for the next lesson. The worksheet on this topic is also given and do try to answer those questions before the next lesson on Day 5 (1245h-1320h).
The following slides are provided by Mr Tan HK
These are the slides that I used today.
Some video clips on Practical Electricity:
Heating Effect of a wire
How a fuse is blown (with increasing current)
Using Balloon as a fuse
The pupils were also instructed to download the syllabus for the subject at the SEAB website located at http://seab.gov.sg/SEAB/oLevel/syllabus/school/2010_GCE_O.html
For Sec 3H pupils who are taking Science (Physics/Biology), the subject code is 5117 and the syllabus can be downloaded directly from: http://seab.gov.sg/SEAB/oLevel/syllabus/2010_GCE_O_Level_Syllabuses/5117_2010.pdf
For Sec 3I & 3K pupils who are taking Physics (with SPA), the subject code is 5058 and the syllabus can be downloaded directly at: http://seab.gov.sg/SEAB/oLevel/syllabus/2010_GCE_O_Level_Syllabuses/5058_2010.pdf
With Sec 3H today, I've shown a video clip on "Safe Use of Electricity in the Home".
We have covered so far, the calculation of Power and electrical usage in kWh. Please go through the ppt slides and get ready for the next lesson. The worksheet on this topic is also given and do try to answer those questions before the next lesson on Day 5 (1245h-1320h).
The following slides are provided by Mr Tan HK
These are the slides that I used today.
Some video clips on Practical Electricity:
Heating Effect of a wire
How a fuse is blown (with increasing current)
Using Balloon as a fuse
Monday, June 29, 2009
Lesson with Sec 3I on 29 Jun 09 (910h - 945h)
Started with some ground rules, things that students need to bring along for Physics lessons:-
1) 30-cm long plastic ruler
2) MOE-approved scientific calculators (Bring a spare one if you can)
3) Blue or black inked pens
4) Pencils
5) Eraser
6) Files (Physics & SPA)
Topic covered today...
1) Revision on Current Electricity
Electromotive Force or emf is the amount of energy required to drive a unit charge throughout a circuit.
Potential Difference (p.d.) is the amount of energy required to drive a unit charge across an electrical component/load (such as resistor, bulb, etc.)
Current (I) is the amount of charges that flows in one second.
We also covered Ohm's law. The function derived from Ohm's law: V=IR
where
V= p.d. in volts
I= current in ampere
R= resistance in ohms
1) 30-cm long plastic ruler
2) MOE-approved scientific calculators (Bring a spare one if you can)
3) Blue or black inked pens
4) Pencils
5) Eraser
6) Files (Physics & SPA)
Topic covered today...
1) Revision on Current Electricity
Electromotive Force or emf is the amount of energy required to drive a unit charge throughout a circuit.
Potential Difference (p.d.) is the amount of energy required to drive a unit charge across an electrical component/load (such as resistor, bulb, etc.)
Current (I) is the amount of charges that flows in one second.
We also covered Ohm's law. The function derived from Ohm's law: V=IR
where
V= p.d. in volts
I= current in ampere
R= resistance in ohms
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